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Rounding and Estimating
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acid alkalinity atomic weight bicarbonate brake horsepower CaCO3 calcium calcium carbonate calcium hypochlorite calculate capacity carbon dioxide carbonate chemical chlorine circuit breakers compound concentration convert daily flow decimal point density determine diameter dioxide direct current Electricity chapter electrons element equation equipment equivalent weight Example expressed feed rate filter flow rate free water surface gauge graph head loss horsepower Hydraulics hydrogen hydroxide indicates lb/d lb/gal load magnesium Mathematics measured meters mg/L as CaCCb milligrams milligrams per liter molecular weight molecule motor moving multiply nomograph operating percent piezometric piezometric surface pipe pipeline pressure head problem psig reaction Reservoir scale scientific notation shown in Figure soda ash soda ash dosage sodium solution solve specific gravity static suction Table tank total hardness treatment plant unknown value valve velocity voltage volume water treatment weir